Home / 9,872.40-13,624.11-5,396.43

Finding the Fourth Proportional to 9,872.40, 13,624.11 and 5,396.43

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Solution

The fourth proportional to 9,872.40, 13,624.11 and 5,396.43 is: 7,447.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,872.40 : 13,624.11 = 5,396.43 : x
  2. Step 2: Convert to fraction form
    9,872.40/13,624.11 = 5,396.43/x
  3. Step 3: Cross multiply
    9,872.40x = 13,624.11 × 5,396.43
  4. Step 4: Simplify right side
    9,872.40x = 73,521,555.93
  5. Step 5: Solve for x
    x = 73,521,555.93/9,872.40
  6. Step 6: Final answer
    x = 7,447.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.